HydroBASINS lev08 watershed · #7080035170
Bassin de Grande Rivière
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 2 administrative regions : La Côte-de-Gaspé, Le Rocher-Percé
Sub-basin area
703,7km²
Upstream area
704km²
Discharge
18,93m³/s
Mean elev.
305m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 702.7 km²99.6% of basin
- 3.1 km²0.4% of basin
2 intersecting protected areas
Ecological reserve
183.57 km² overlap
Natural Area Under Private Stewardship
5.84 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
321 distinct species · 2 371 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 30 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Grande Rivière : 16 espèces reliées par 120 interactions GloBI sur 3 types (connectance 25.8%, filtre Serrano α=0.2). 15 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
2,3°C
Annual rain
1 161mm
Moisture idx (CMI)
0,48
Runoff
791mm/an
PET
603mm
AET
556mm
Mean slope
8,6°
Water table
202cm
Forest
94%
Crops
0%
Urban
0%
Protected
26%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)